Brick.



\ N5; 729,918. PATENTBD JUNE 2, 190s.

` J.. L. BRAUN.

BRICK. APPLICATION FILED NOV. 26, 1902.

No MODEL.

2 SHEETS-SHEET 1- S/ 'Hmmlml".

P'ATENTBD' JUNE 2, 1903.

J. L, BRAUN.

BRICK. `APPLICATION riLBD Nov. 2g, 1902.

zsHEBTs-SHEET 2.

" No MoDEL.

lz/ V Patented June 2, 190e.

Trice.

JOHANN L. BRAUN, OF PITTSBURG, PENNSYLVANIA.

BRICK.

'SPECIFICATION formingpart of Letters Patent No. 729,918, dated June 2,1903.

d Application led November 26. 1902. `Serial No. 132.885. (No model.)

To al?, whom it may concern:

Be it known that I, JOHANN LBRAUN, a citizen of theUnited States ofAmerica, residing at Pittsburg, in the county of Allegheny, and

State of Pennsylvania, have invented certain new and useful Improvementsin Bricks, oi:` which the following ris a specicatiomreference being hadtherein to the accompanying drawings.

This invention relates to certain new and I i struct the `brickbymolding thesame 1n two zsections, the upper section lbeing provideduseful improvements in building-brick, and relates more particularly tothat class of brick employed for building furnaces and like walls, theinvention having for its object to construct a brick with longitudinaland 4vertical openings whereby when the wall is complete a series ofcontinuous horizontal ilues and also a series of continuous verticalilues will be provided throughout the wall in order to permit thecirculation of cool air to preserve the wall.

Briefly described, my improved buildingbrick comprises two sections ormembers adapted to match together, each section being provided on itsmatching face with a semicircular groove extending throughout the lengthof the brick whereby when the sections are matched together thecylindrical iiue or opening will be provided centrally .throughout thelength of the brick. The sections are provided on their matching faceswith tongues and grooves whereby the sections will match neatlytogether. Each section is also prolvided with onehor more verticalopenings like parts throughout the several'views, in

which v Figure l is a detail perspective view of the upper section ormember of the brick. Fig.

2 is a like view of the lower section or member. Fig. 3 is an end viewof the sections of the corner-brick.

matched together. Fig. l is a top plan view of the lower section. Fig. 5is a plan view 6 is a detail perspective viewof a modified form ofbrick. Fig. 7 is a horizontal sectional view of the i same, showing indotted lines how the bricks of this f orm are matched together. Fig S isa top plan view, and Fig. 9 is an end view, thereof.

In accordance with my invention `I conthroughout its matchingface with asemicircular groove 2 and adjacent the edge of this groove with a tongue3, this tongue being formed by shouldering off the face of the brick, asat et. The lower section or member dof thebrick is also provided with asemicylindrical groove 6 and with ledges 7, which are adapted to fit onthe shouldered-oft faces i of the section 1, the section 5 havingshouldered faces S, which are adapted to receive the tongues Bof thesection 1. Each of the sections is provided with vertical apertures 9,which apertures in the sections aline when the sections are matchedtogether, whereby a series of continuous vertical ilues are providedthroughout the wall, and when the 'sections are rmatched together theseinicylindrical grooves 2 and G forni the continuous horizontal iluel0, extending throughout each course of the bricks.

` In the construction of the corner-brick in accordance with myinvention I mold the same in two sections, comprising the legs l1 andI2,

\ as shown in Fig. 5, extending at substantially right angles to leachother and the former being preferably constructed about twice the lengthof the latter. The sections of the corner-brick are matched together inthe same manner as the straight-line bricks and are provided with thehorizontal flue 10 and a series of vertical ilues 9, the longerleg beingprovided with two of these ilues and the shorter leg witha single flue.The brick is made of any suitable refractory material, such as generallyemployed for the construction of furnacebricks.

In Figs. 6 to 9 I show a modified form of construction in which thebrickis cut away on opposite faces at its ends, forming the half-sections 1112, which are integral with ICC the body portion 14. The section oreXtension 11 of the one brick receives thereon the extension 12 of theadjacent brick. The section or extension 12/ are provided withlongitudinal shoulders 15, which are formed by shouldering off the faceof the extension, as at 16, these shoulders 15 iitting in theshouldered-off portions 17 of the extensions 11/ of 'these bricks arematched together-is clearly shown in Fig. 7 of the drawings.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is e 1I A furnace-brick comprising matchingsections, tongues on one of theA sections adapted to match with theother section, eachsection provided with a longitudinal semicirculargroove in its matching face, and vertical iiues formed in each of thesections and extending through the brick, substantially as described.

2. A furnace-brick comprising an upper and a lower section adapted tomatch together, the upper sections having tongues adapted to match withthe shouldered-oft portions in the lower section, and the lower sectionhaving ledges adapted to match with the shoulderedoi' portions of theupper section, each of said sections having a semicylindrical groove inits matching face and provided with vertical openings, as and for thepurpose described.

3. A furnacebrick comprising matching sections, one section havingtongues adapted to match with the other section, and each scction havingvertical and longitudinal lues extending therethrough, substantially asdcn scribed.

In testimony whereof I affix my signature in the presence of twowitnesses.

JOHANN L. BRAUN.

Vitnesses:

H. C. EvERT, A. M. WrLsoN.

